The Vaillant 0020135131 Heat Exchanger is a genuine replacement component engineered to provide efficient and reliable heat transfer in compatible Vaillant boiler systems. This heat exchanger transfers thermal energy from the boiler’s primary heating circuit into the central heating and domestic hot water circuits, helping maintain consistent temperature delivery, strong performance, and energy-efficient operation. Manufactured to Vaillant’s exacting quality and safety standards, it delivers durable, long-lasting performance when fitted by a qualified heating engineer during servicing, maintenance, or when replacing a worn, fouled, or failed exchanger.

Compatibility for the 0020135131 heat exchanger includes Vaillant ecoTEC Plus VU and ecoTEC Pro VUW boiler models that utilise this specific heat exchanger design. Always confirm your boiler’s exact model and part specification before installation to ensure correct fit and dependable performance.

Using a genuine Vaillant heat exchanger helps maintain effective heat transfer throughout your heating and hot water system, supports stable temperature delivery under varying demand, and contributes to the long-term reliable and energy-efficient operation of your central heating and hot water system